The lights of every bulb turn on and out one by one in sequence and quickly just like a meteor shower or falling snow in the night sky. It is very beautiful and it can be connected to a much wonderful outcome in your house or garden. It is high-quality and energy-efficient in a dustproof transparent PC material. Also corrosion-resistant, aging resistant, and more durable than it can last a long time. Can be used outdoors and indoors because the tube lights are IP65 waterproof, and plugin ready.